2. 计算机
  3. 在一台Cisco路由器上执行show access-lists命令显示如下一组信息 Extended IP access list port4444 permit icmp 202.38.97.0,wildcard bits 0.0.0.255 any d

在一台Cisco路由器上执行show access-lists命令显示如下一组信息 Extended IP access list port4444 permit icmp 202.38.97.0,wildcard bits 0.0.0.255 any d

admin2020-10-21  26
问题 在一台Cisco路由器上执行show access-lists命令显示如下一组信息
Extended IP access list port4444
permit icmp 202.38.97.0,wildcard bits 0.0.0.255 any
deny icmp any any
deny udp any any eq 1434
deny tcp any any eq 4444
permit ip any any
根据上述信息，正确的access-list的配置命令是
选项 A、Router(config) # ip access-list extended port4444
   Router(config-ext-nacl) # deny icmp any any
   Router(config-ext-nacl) # deny udp any any eq 1434
   Router(config-ext-nacl) # deny tcp any any eq 4444
   Router(config-ext-nacl) # permit icmp 202.38.97
B、Router(config) # access-list port4444 permit icmp 202.38.97.0 0.0.0.255 any
   Router(config) # access-list port4444 deny icmp any any
   Router(config) # access-list port4444 deny udp any any eq 1434
   Router(config) # access-list port4444 deny tcp any
C、Router(config) # ip access-list extended port4444
   Router(config-ext-nacl) # permit 202.38.97.0 0.0.0.255 any icmp
   Router(config-ext-nacl) # deny any any icmp
   Router(config-ext-nacl) # deny any any udp eq 1434
   Router(config-ext-nacl) # deny any
D、Router(config) # ip access-list extended port4444
   Router(config-ext-nacl) # permit icmp 202.38.97.0 0.0.0.255 any
   Router(config-ext-nacl) # deny icmp any any
   Router(config-ext-nacl) # deny upd any any eq 1434
   Router(config-ext-nacl) # deny tcp
答案D
解析
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